Solve each problem.

1. What is the sum of 3x + 10 and 5x – 3? _________________

2. What is 15x3 – 3x2 + 7x + 8 less than 7x3 + 12x + 4x2 – 10? _______________

3. What is the product when (5x – 3y) is multiplied with (25x2 + 15xy + 9y2

)? __

4. When (49x2 – 9) is divided by (7x-3), the quotient is? ________________

5. What quotient is obtained if 4x2 + 5x – 21 is divided by x + 3? ______​